<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>页面二</title>
</head>

<body>
    <script>
        // 创建一个广播频道，并且传入的字符串要和页面一的一样
        const broadCastChannel = new BroadcastChannel("load");

        broadCastChannel.onmessage = function(e){
            console.log(e.data);
        }
    </script>
</body>

</html>
